Add support for timeseries property

[thorkildcognite]

This adds support for the primitive timeseries type, that is meant to hold an external-id for a time series existing in the time series resource type.

[codecov]

Codecov Report

Merging #604 (a6746b4) into master (1889222) will increase coverage by 0.08%.
The diff coverage is 96.29%.

@@            Coverage Diff             @@
##           master     #604      +/-   ##
==========================================
+ Coverage   79.76%   79.85%   +0.08%     
==========================================
  Files         100      100              
  Lines        3010     3023      +13     
  Branches       41       41              
==========================================
+ Hits         2401     2414      +13     
  Misses        609      609              

Impacted Files	Coverage Δ
.../scala/v1/fdm/common/properties/PropertyType.scala	95.65% <95.45%> (+1.05%)	⬆️
...com/cognite/sdk/scala/v1/dataModelProperties.scala	100.00% <100.00%> (ø)
.../v1/fdm/common/properties/PropertyDefinition.scala	86.04% <100.00%> (+0.33%)	⬆️
...dk/scala/v1/fdm/instances/InstanceDefinition.scala	74.07% <100.00%> (+0.38%)	⬆️

[TharinduDG]

LGTM
@thorkildcognite please bump the version and merge :)

[TharinduDG]

taking over with #610